Overriding Model #56 Added comments in README.md to introduce overridingModel feature.
Overriding Model #56
Added comments in README.md to introduce overridingModel feature.

alexkrishnan/swagger-maven-plugin,azimowski/swagger-maven-plugin,dantran/swagger-maven-plugin,kongchen/swagger-maven-plugin,kongchen/swagger-maven-plugin,azimowski/swagger-maven-plugin,aeq/swagger-maven-plugin,timbuethe/swagger-maven-plugin,GGui/swagger-maven-plugin,timbuethe/swagger-maven-plugin,kongchen/swagger-maven-plugin,GGui/swagger-maven-plugin,aeq/swagger-maven-plugin,dantran/swagger-maven-plugin,alexkrishnan/swagger-maven-plugin